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Chavez Junction
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 Posted: Thu May 21st, 2015 08:57 pm
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Salada
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I have driven & fired trains, spent many years rebuilding & fixing locos as a fitter/machinist/welder & even photographed a few but up till now I have never built a model railroad - always too busy living life (work, wimin, beer, music - all the usual cr*p).
But after xx years the time has come, due to my accidental discovery of On30 some 18 months go. At last, decent sized trains in a mini space, or so I naively thought.

Originally I was going to model Pagosa Junction on the D&RGW NG San Juan extension. After much research & some help (thanks to JTrain/James & ChiloquinRuss/Russ) I finally had the full track-plan, timetable, history etc. but the more I researched the more I realised that for various reasons the actual prototype would make an unsatisfactory model. A 1:4 scale drawing confirmed this.  

So we now have Chavez Junction, totally fictional somewhere down Mexico way but definitely not south of the border (cue music). I like trains, big trains, trundling past while I'm fiddling with something else so we have a double circuit "roundy-roundy" , one high level, one low level with a couple of interchange grades between the two to vary the route.

Ideally, I want to capture the open spaciousness of a typical D&RGW track layout but also with a bit of switching capacity - not easy in a room only 11' 10" x 9' 6" which must also continue to serve as business office, workshop, music & computer room etc. etc.

Plan & demo pics to follow asap (I forgot to upload them). Your comments will be appreciated.

Regards,                    Michael


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 Posted: Thu May 21st, 2015 09:30 pm
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Salada
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OK, here is the plan (1st version) :






The black lines are at 0" height. The solid red line varies around +2" to +4" & runs on a rocky small shelf around the backscene. The red dashed line is the ascending /descending "Junction" branch off the (black) main.

All radii are 36" minimum, up to approx 40". Only the area shown will be modelled. Beyond & between the arrowheads the high & low levels will run around the other walls on a narrow shelf (6" or so) - perhaps with a bit of staging along the 'back' wall & an interchange grade somewhere to allow routing changes between high & low level. The low level passing sidings will allow a Mikado + 14 cars to cross with another.

Some quick mock up photos :




Above is the LHS side of the depot area. Below is the RHS :







And a lengthwise overview :





I knew Madame Salada's perfume boxes would be useful some day.


An earlier version had 3 running lines/passing sidings but there was too much track everywhere. 3 would be nice but the baseboards are only 24" wide - maybe an extra 6" wide cantilever extension would be better ? (making a total board width of 30" in the Junction/Depot area).

Any comments please ?  Eneough ops capacity to be interesting or not ?

I am planning on switching cars out of  passing low level trains to make up consists heading onto the branch junction & vice versa with stuff coming downgrade off the branch.

There probably won't be any further developments until after the summer beer/music/travel season is over - still got to live a bit !.

Regards,                    Michael

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 Posted: Fri May 22nd, 2015 01:52 am
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Herb Kephart
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The dotted red line looks like it will be a bit more than a 6% grade--on a curve, no less.

Better trade in those K's on a couple Shays---

Herb



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 Posted: Fri May 22nd, 2015 01:18 pm
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Dwayne
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He could move the water tank and have the ascending line start further back and go behind it to reach the upper level in more of a straight line.



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 Posted: Fri May 22nd, 2015 02:06 pm
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Herb Kephart
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Thought of that, Dwayne, but then the problem of too many tracks in the 24'' width comes up. And not advisable to increase the width as that is the extreme of normal arms reach--and leaning over the tablework that close to the ceiling isn't an option to be considered lightly.

Herb



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 Posted: Fri May 22nd, 2015 03:23 pm
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Dwayne
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Ah, the travails of space limitations. :td:



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 Posted: Fri May 22nd, 2015 07:57 pm
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Shoulders
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Hi Michael

Looks like a good start, but have to agree with herb.

My be instead keep the design like you have got it but make the out side Maine line decrease to the connection route and the then raise again on a steady cline and descend.

This would get rid of the steep clime and increase scenic space but not having to increase the connection route for smoother climb, you could even shorten this and decrease track clutter as it will be on the same level at this point.

I do like the track plan.

Cheers Dan

Last edited on Fri May 22nd, 2015 07:59 pm by Shoulders



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 Posted: Fri May 22nd, 2015 08:00 pm
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Shoulders
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Or 50/50 with the connection route and rear main line. That would look good.



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 Posted: Fri May 22nd, 2015 08:04 pm
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Shoulders
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Oh, sorry just looked at the track plan again youth already got it shown as 50/50.



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 Posted: Fri May 22nd, 2015 10:37 pm
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Salada
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My thanks to Dan, Dwayne & that Other Chap. The gradients (grades) are only an approximate idea at the moment, 3 % will be the absolute max, maybe less than 3%. But I do need an excuse for a banker (helper) on daytime duty at the junction.

Dan : thanks for that idea. Having  the junction branch join the outer main circuit at or near to level is worth considering.

My main concern is to make the junction, sidings  & team tracks interesting eneough for good "play value" without covering every square inch with rail. The usual conundrum as Dwayne said.

Thanks,                         Michael

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